Converting widget panel into a floating view

> The widget panel is only inflated when needed
> Using the swipe up/down interaction for widgets tray
> Removing additional view wrappers from all-apps
> Widget tray is preserved across activity recreation
> Launcher no longer has WIDGET state, the actual code around
  the states will be removed in a follow-up cl

Bug: 67678570
Bug: 67585158
Change-Id: Ia29a7c33ec81e6c53cc24e2906b7022b6f41755b

src/com/android/launcher3/allapps/AllAppsContainerView.java

@@ -16,10 +16,8 @@
 package com.android.launcher3.allapps;
 
 import android.content.Context;
-import android.graphics.Color;
+import android.graphics.Bitmap;
 import android.graphics.Rect;
-import android.graphics.drawable.ColorDrawable;
-import android.graphics.drawable.InsetDrawable;
 import android.support.v7.widget.LinearLayoutManager;
 import android.text.Selection;
 import android.text.SpannableStringBuilder;
@@ -28,10 +26,11 @@ import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.RelativeLayout;
 
 import com.android.launcher3.AppInfo;
-import com.android.launcher3.BaseContainerView;
 import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.ClickShadowView;
 import com.android.launcher3.DeleteDropTarget;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.DragSource;
@@ -41,7 +40,6 @@ import com.android.launcher3.ItemInfo;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.PromiseAppInfo;
 import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.SpringAnimationHandler;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.dragndrop.DragController;
@@ -49,9 +47,8 @@ import com.android.launcher3.dragndrop.DragOptions;
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.keyboard.FocusedItemDecorator;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Target;
-import com.android.launcher3.util.ComponentKey;
-import com.android.launcher3.util.ComponentKeyMapper;
 import com.android.launcher3.util.PackageUserKey;
+import com.android.launcher3.util.TransformingTouchDelegate;
 
 import java.util.List;
 import java.util.Set;
@@ -59,13 +56,17 @@ import java.util.Set;
 /**
  * The all apps view container.
  */
-public class AllAppsContainerView extends BaseContainerView implements DragSource,
-        View.OnLongClickListener, Insettable {
+public class AllAppsContainerView extends RelativeLayout implements DragSource,
+        View.OnLongClickListener, Insettable, DeviceProfile.LauncherLayoutChangeListener,
+        BubbleTextView.BubbleTextShadowHandler {
+
+    protected final Rect mBasePadding = new Rect();
 
     private final Launcher mLauncher;
     private final AlphabeticalAppsList mApps;
     private final AllAppsGridAdapter mAdapter;
     private final LinearLayoutManager mLayoutManager;
+    private final ClickShadowView mTouchFeedbackView;
 
     private AllAppsRecyclerView mAppsRecyclerView;
     private SearchUiManager mSearchUiManager;
@@ -78,6 +79,8 @@ public class AllAppsContainerView extends BaseContainerView implements DragSourc
 
     private SpringAnimationHandler mSpringAnimationHandler;
 
+    private TransformingTouchDelegate mTouchDelegate;
+
     public AllAppsContainerView(Context context) {
         this(context, null);
     }
@@ -98,19 +101,69 @@ public class AllAppsContainerView extends BaseContainerView implements DragSourc
         mSearchQueryBuilder = new SpannableStringBuilder();
 
         Selection.setSelection(mSearchQueryBuilder, 0);
+
+        mTouchFeedbackView = new ClickShadowView(context);
+        // Make the feedback view large enough to hold the blur bitmap.
+        int size = mLauncher.getDeviceProfile().allAppsIconSizePx
+                + mTouchFeedbackView.getExtraSize();
+        addView(mTouchFeedbackView, size, size);
     }
 
     @Override
-    protected void updateBackground(
-            int paddingLeft, int paddingTop, int paddingRight, int paddingBottom) {
-        if (mLauncher.getDeviceProfile().isVerticalBarLayout()) {
-            getRevealView().setBackground(new InsetDrawable(mBaseDrawable,
-                    paddingLeft, paddingTop, paddingRight, paddingBottom));
-            getContentView().setBackground(
-                    new InsetDrawable(new ColorDrawable(Color.TRANSPARENT),
-                            paddingLeft, paddingTop, paddingRight, paddingBottom));
-        } else {
-            getRevealView().setBackground(mBaseDrawable);
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+
+        DeviceProfile grid = Launcher.getLauncher(getContext()).getDeviceProfile();
+        grid.addLauncherLayoutChangedListener(this);
+
+        mTouchDelegate = new TransformingTouchDelegate(mAppsRecyclerView);
+        setTouchDelegate(mTouchDelegate);
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+
+        DeviceProfile grid = Launcher.getLauncher(getContext()).getDeviceProfile();
+        grid.removeLauncherLayoutChangedListener(this);
+    }
+
+    /**
+     * Calculate the background padding as it can change due to insets/content padding change.
+     */
+    @Override
+    public void onLauncherLayoutChanged() {
+        DeviceProfile grid = mLauncher.getDeviceProfile();
+        if (!grid.isVerticalBarLayout()) {
+            return;
+        }
+
+        int[] padding = grid.getContainerPadding();
+        int paddingLeft = padding[0];
+        int paddingRight = padding[1];
+        mBasePadding.set(paddingLeft, 0, paddingRight, 0);
+        setPadding(paddingLeft, 0, paddingRight, 0);
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        super.onLayout(changed, left, top, right, bottom);
+        mTouchDelegate.setBounds(
+                mAppsRecyclerView.getLeft() - mBasePadding.left,
+                mAppsRecyclerView.getTop() - mBasePadding.top,
+                mAppsRecyclerView.getRight() + mBasePadding.right,
+                mAppsRecyclerView.getBottom() + mBasePadding.bottom);
+    }
+
+    @Override
+    public void setPressedIcon(BubbleTextView icon, Bitmap background) {
+        if (icon == null || background == null) {
+            mTouchFeedbackView.setBitmap(null);
+            mTouchFeedbackView.animate().cancel();
+        } else if (mTouchFeedbackView.setBitmap(background)) {
+            View rv = findViewById(R.id.apps_list_view);
+            mTouchFeedbackView.alignWithIconView(icon, (ViewGroup) icon.getParent(), rv);
+            mTouchFeedbackView.animateShadow();
         }
     }
 
@@ -157,23 +210,7 @@ public class AllAppsContainerView extends BaseContainerView implements DragSourc
         if (mLauncher.getDragLayer().isEventOverView(mSearchContainer, ev)) {
             return true;
         }
-
-        int[] point = new int[2];
-        point[0] = (int) ev.getX();
-        point[1] = (int) ev.getY();
-        Utilities.mapCoordInSelfToDescendant(
-                mAppsRecyclerView.getScrollBar(), mLauncher.getDragLayer(), point);
-        // IF the MotionEvent is inside the thumb, container should not be pulled down.
-        if (mAppsRecyclerView.getScrollBar().shouldBlockIntercept(point[0], point[1])) {
-            return false;
-        }
-
-        // IF scroller is at the very top OR there is no scroll bar because there is probably not
-        // enough items to scroll, THEN it's okay for the container to be pulled down.
-        if (mAppsRecyclerView.getCurrentScrollY() == 0) {
-            return true;
-        }
-        return false;
+        return mAppsRecyclerView.shouldContainerScroll(ev, mLauncher.getDragLayer());
     }
 
     /**
@@ -191,7 +228,7 @@ public class AllAppsContainerView extends BaseContainerView implements DragSourc
 
         // This is a focus listener that proxies focus from a view into the list view.  This is to
         // work around the search box from getting first focus and showing the cursor.
-        getContentView().setOnFocusChangeListener(new View.OnFocusChangeListener() {
+        setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
                 if (hasFocus) {
@@ -222,20 +259,13 @@ public class AllAppsContainerView extends BaseContainerView implements DragSourc
         mAppsRecyclerView.preMeasureViews(mAdapter);
         mAdapter.setIconFocusListener(focusedItemDecorator.getFocusListener());
 
-        getRevealView().setVisibility(View.VISIBLE);
-        getContentView().setVisibility(View.VISIBLE);
-        getContentView().setBackground(null);
+        onLauncherLayoutChanged();
     }
 
     public SearchUiManager getSearchUiManager() {
         return mSearchUiManager;
     }
 
-    @Override
-    public View getTouchDelegateTargetView() {
-        return mAppsRecyclerView;
-    }
-
     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         DeviceProfile grid = mLauncher.getDeviceProfile();